Jason would suggest that they use symbols that wouldn't look out of place repeated on buildings. Like maybe make them look like graffiti tags, so that ~the enemy~ doesn't raise an eyebrow at all these identical symbols going up all over town.

I will suggest that the Tree/Stars of Gondor as a healing symbol would make me stupidly happy.

(Stupid newbie question: does this kind of planning post serve to handwave the IC discussion? Or is the idea to plan here and then play it out IC?)